Maths practice for 12-year-olds - page 346 of 350
Number of problems found: 6989
- Determine the number
Determine the number x that x+8 is (7)/(5) from one half of 7 x -1. - Rates
When gas consumption, the consumer may choose one of two rates: rate A - which pays 0.4 € per 1 m³ of gas a flat monthly fee of 3.9 € (regardless of consumption) rate B - which pays 0.359 € per 1 m³ of gas a flat monthly fee of 12.5 € From what monthly co - 3-bracket 3
Two angles in a triangle are 90° and 60°. Has the triangle at least two equal sides? - 3-bracket
Maybe the largest angle in the triangle is less than 20°? - Diagonal
Can a rhombus have the same length, diagonal, and side? - Numeric question
Is it possible a negative, irrational number? - Number
Is number 2.8814789 irrational? - Ratio v2
Decrease in the ratio 8:16 number 20.2. - Ratio Increase the number 25.6 in the ratio 7:4.
- Trunk
Calculate the length of the biggest fishing rod that can be inserted into the trunk of a car with dimensions 152 x 82 × 81 cm. - Box
Calculate the angle between box base 9 x 14 and body diagonal length 18. - Observatory
The observatory dome has the shape of a hemisphere with a diameter d = 10 m. Calculate the surface. - Rotating cone II
Calculate the area of the surface of a rotating cone with base radius r=15 cm and height h=13 cm. - Rotating cone Calculate the volume of a rotating cone with base radius r=18 cm and height h=20 cm.
- Is right?
Is a triangle with sides 15, 66, and 68 right triangle? - Average
The average of 5 numbers is 108. What is its sum? - Bulbs
In the box are 6 bulbs with power 75 W, 14 bulbs with power 40 W, and 15 with 60 W. Calculate the probability that a randomly selected bulb is: - Rectangles
How many rectangles with area 8855 cm² whose sides are natural numbers? - Minute angle
Find the size of the angle, which takes a minute hand for 30 minutes. - Secret number
Find the secret number n, which reversed decreases by 16.4 if the number increases by 16.4.
Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
